Re: [gmx-users] AFM pulling simulations

2011-03-22 Thread Justin A. Lemkul



X Rules wrote:

Hello All,

 I am looking for a very simple (step-by-step) tutorial on AFM pulling 
simulations (constant force/ constant velocity) with gromacs.


 Can someone point me to a simple tutorial to perform these simulations 
with gromacs?


Thanks,



http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling

-Justin

--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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Re: [gmx-users] AFM pulling simulations

2011-03-22 Thread Laura Kingsley

http://www.gromacs.org/Documentation/Tutorials

On 03/22/2011 11:02 AM, X Rules wrote:

Hello All,

 I am looking for a very simple (step-by-step) tutorial on AFM pulling 
simulations (constant force/ constant velocity) with gromacs.


 Can someone point me to a simple tutorial to perform these 
simulations with gromacs?


Thanks,



--
Laura Kingsley

Graduate Student
Medicinal Chemistry and Molecular Pharmacology
Purdue University
Office: RHPH 504A
575 Stadium Mall Dr.
West Lafayette, IN 47907
Office Phone: (765) 496-6643

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RE: [gmx-users] AFM pulling simulations

2011-03-22 Thread X Rules

Thanks Justin, 

 That is pretty much the only tutorial one can found.
 I have one question now, how do I force a particular orientation of my protein 
during genbox (for example if i need to pull along N-C vector, i need my 
protein oriented that way, i.e in Z direction for example to later apply the 
force in that direction).



 Date: Tue, 22 Mar 2011 11:15:54 -0400
 From: jalem...@vt.edu
 To: gmx-users@gromacs.org
 Subject: Re: [gmx-users] AFM pulling simulations
 
 
 
 X Rules wrote:
  Hello All,
  
   I am looking for a very simple (step-by-step) tutorial on AFM pulling 
  simulations (constant force/ constant velocity) with gromacs.
  
   Can someone point me to a simple tutorial to perform these simulations 
  with gromacs?
  
  Thanks,
  
 
 http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling
 
 -Justin
 
 -- 
 
 
 Justin A. Lemkul
 Ph.D. Candidate
 ICTAS Doctoral Scholar
 MILES-IGERT Trainee
 Department of Biochemistry
 Virginia Tech
 Blacksburg, VA
 jalemkul[at]vt.edu | (540) 231-9080
 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
 
 
 -- 
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RE: [gmx-users] AFM pulling simulations

2011-03-22 Thread X Rules


too eager to send an email.. 
I think playing with editconf with princ flag should do the trick .. 

sorry folks and thanks for the help !! 

From: xru...@live.com
To: gmx-users@gromacs.org
Subject: RE: [gmx-users] AFM pulling simulations
Date: Tue, 22 Mar 2011 15:47:41 +








Thanks Justin, 

 That is pretty much the only tutorial one can found.
 I have one question now, how do I force a particular orientation of my protein 
during genbox (for example if i need to pull along N-C vector, i need my 
protein oriented that way, i.e in Z direction for example to later apply the 
force in that direction).



 Date: Tue, 22 Mar 2011 11:15:54 -0400
 From: jalem...@vt.edu
 To: gmx-users@gromacs.org
 Subject: Re: [gmx-users] AFM pulling simulations
 
 
 
 X Rules wrote:
  Hello All,
  
   I am looking for a very simple (step-by-step) tutorial on AFM pulling 
  simulations (constant force/ constant velocity) with gromacs.
  
   Can someone point me to a simple tutorial to perform these simulations 
  with gromacs?
  
  Thanks,
  
 
 http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling
 
 -Justin
 
 -- 
 
 
 Justin A. Lemkul
 Ph.D. Candidate
 ICTAS Doctoral Scholar
 MILES-IGERT Trainee
 Department of Biochemistry
 Virginia Tech
 Blacksburg, VA
 jalemkul[at]vt.edu | (540) 231-9080
 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
 
 
 -- 
 gmx-users mailing listgmx-users@gromacs.org
 http://lists.gromacs.org/mailman/listinfo/gmx-users
 Please search the archive at 
 http://www.gromacs.org/Support/Mailing_Lists/Search before posting!
 Please don't post (un)subscribe requests to the list. Use the 
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 Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
  

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Re: [gmx-users] AFM Pulling Simulations

2010-08-30 Thread ms

On 26/08/10 19:56, chris.ne...@utoronto.ca wrote:

Natalie:

It would also be a good idea for you to ensure that your supervisor
knows how difficult it is to learn and correctly apply these methods. If
they think that a person can learn linux and gromacs and the gromacs
pull code in a short period of time, then the stage is set for
frustration and ultimate disaster.

Lots of people think that these things are plug and play -- of course,
they are not.

If you don't have a mentor nearby who can help you, then figuring this
all out and getting some meaningful data could easily take you a year. I
don't mean to scare you off, but it is true that while no professor asks
a new student to get protein crystals within a few months, that request
is often made for simulation results from experimental supervisors.

Perhaps the gromacs community should be working toward getting
testimonials to the significant amount of time that it can take to learn
to run simulations properly on the gromacs site that new users could
direct their supervisors to in the case that those supervisors are not
acquainted with molecular simulation.



I couldn't agree more. I have been thrown into learning GROMACS and 
designing a coarse grain model from scratch (my background is that of an 
experimentalist, doing AFM pulling experiments, by the way!), all 
practically by myself. I mean: I *wanted* to learn all of that, I just 
didn't expect I would have done it *alone*. So I read the Frenkel-Smit 
book, the GROMACS manual, and banged my head a lot (luckly I was already 
experienced with Linux and programming). No wonder one year after, I'm 
just beginning to see where I am going *sigh*.


m.


Chris.




Natalie Stephenson wrote:

Hi,

I'm a complete novice when it comes to using any kind of command
prompt based programmes and hadn't even heard of Linux until my
supervisor wanted me to use gromacs ... so needless to say I'm
running into a few problems!!

I've managed to perform all the generic energy minimisations etc on
my protein (basically I can do everything that has been spoon fed to
me on the tutorial), but now I want to begin simulating AFM pulling
experiments. I've printed (and bound!) the entire manual but I'm
still coming up against problems with understanding how I go about
running the AFM simulations.


Does anyone have a basic syntax they have used to perform a similar
simulation so I can work from there and figure out what I need to put
where?

Also, do I need to create any specific input files for these
simulations?

Thanks so much for your help with this...
A rather inept gromacs user (Natalie!)
xxx



There is a steered MD component to the umbrella sampling tutorial:

http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling


Though it is an excellent reference, the manual will not teach you
everything you need to know. The mailing list archive (although
currently glitching) and Google are your friends, as well. There are
hundreds of threads in the archive about pull code success and
failure, at least some of which should be informative :)



Thanks loads!! I'll give it a try! Natalie xxx




-Justin





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Re: [gmx-users] AFM Pulling Simulations

2010-08-26 Thread Justin A. Lemkul



Natalie Stephenson wrote:

Hi,

I'm a complete novice when it comes to using any kind of command prompt 
based programmes and hadn't even heard of Linux until my supervisor 
wanted me to use gromacs ... so needless to say I'm running into a few 
problems!!


I've managed to perform all the generic energy minimisations etc on my 
protein (basically I can do everything that has been spoon fed to me on 
the tutorial), but now I want to begin simulating AFM pulling 
experiments.  I've printed (and bound!) the entire manual but I'm still 
coming up against problems with understanding how I go about running the 
AFM simulations.



Does anyone have a basic syntax they have used to perform a similar 
simulation so I can work from there and figure out what I need to put 
where?


Also, do I need to create any specific input files for these simulations?

Thanks so much for your help with this...
A rather inept gromacs user (Natalie!)
xxx



There is a steered MD component to the umbrella sampling tutorial:

http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling

Though it is an excellent reference, the manual will not teach you everything 
you need to know.  The mailing list archive (although currently glitching) and 
Google are your friends, as well.  There are hundreds of threads in the archive 
about pull code success and failure, at least some of which should be informative :)


-Justin

--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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Re: [gmx-users] AFM Pulling Simulations

2010-08-26 Thread Natalie Stephenson

Quoting Justin A. Lemkul jalem...@vt.edu:




Natalie Stephenson wrote:

Hi,

I'm a complete novice when it comes to using any kind of command  
prompt based programmes and hadn't even heard of Linux until my  
supervisor wanted me to use gromacs ... so needless to say I'm  
running into a few problems!!


I've managed to perform all the generic energy minimisations etc on  
my protein (basically I can do everything that has been spoon fed  
to me on the tutorial), but now I want to begin simulating AFM  
pulling experiments.  I've printed (and bound!) the entire manual  
but I'm still coming up against problems with understanding how I  
go about running the AFM simulations.



Does anyone have a basic syntax they have used to perform a similar  
simulation so I can work from there and figure out what I need to  
put where?


Also, do I need to create any specific input files for these simulations?

Thanks so much for your help with this...
A rather inept gromacs user (Natalie!)
xxx



There is a steered MD component to the umbrella sampling tutorial:

http://www.gromacs.org/Documentation/Tutorials#Pull_Code_and_Umbrella_Sampling

Though it is an excellent reference, the manual will not teach you  
everything you need to know.  The mailing list archive (although  
currently glitching) and Google are your friends, as well.  There  
are hundreds of threads in the archive about pull code success and  
failure, at least some of which should be informative :)



Thanks loads!! I'll give it a try! Natalie xxx




-Justin

--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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